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Pension Benefits (Tables)
 9 Months Ended
Jan. 31, 2020
Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract]  
Net Periodic Pension (Benefit) Cost
Net periodic pension benefit cost consisted of the following for the three- and nine-month periods ended January 31, 2020 and 2019: 
 

Three Months Ended

Nine Months Ended
 

January 31,

January 31,
(in thousands)

2020

2019

2020

2019
Interest cost

$
1,493


$
1,567


$
4,480


$
4,702

Expected return on plan assets

(2,082
)

(2,127
)

(6,245
)

(6,382
)
Recognized net actuarial loss

423


412


1,269


1,236














Net periodic pension benefit

$
(166
)

$
(148
)

$
(496
)

$
(444
)